Recently, scientists at the University of Pennsylvania in the United States have developed a memory that can work continuously for 60 hours at a high temperature of 600 ℃. This temperature tolerance is more than twice that of current commercial storage devices, indicating that the memory has extremely strong reliability and stability, and is expected to excel in extreme environments that can cause electronic or storage device failures. It also lays the foundation for artificial intelligence systems that perform intensive computing under harsh conditions.
Researchers say that this memory is a non-volatile device that can retain information on the memory for a long time without power. In contrast, traditional silicon-based flash devices begin to fail when the temperature exceeds 200 ℃, leading to equipment failures and information loss.
The latest memory is developed using ferroelectric aluminum scandium nitride (AlScN). AlScN has storage advantages because it can maintain specific electrical states such as on and off at higher temperatures after removing external electric fields. Its unique crystal structure also makes the bonds between atoms more stable and firm, not only heat-resistant, but also very durable. The design and performance of storage devices can also quickly switch between different electrical states, which is crucial for high-speed data reading and writing.
The storage device consists of a metal insulator metal structure, including nickel and platinum electrodes, as well as a 45 nanometer thick layer of AlScN. This structural design enables the memory to be compatible with high-temperature silicon carbide logic devices and work in conjunction with high-performance computing systems designed specifically for extreme temperatures.
Researchers say that the new memory is a "memory enhanced computing" device that is stable and can integrate memory and processing components more tightly, improving computing speed, complexity, and efficiency. They will continue to explore using new devices for AI systems operating in extreme environments.
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